Achievement Standard 90768

Use physics concepts and principles to describe the behaviour of light
Notes:
1 Physics concepts and principles of light will be limited to the following:
• the way light travels in straight lines
• reflection from plane and spherical mirrors, qi=qr
• refraction, where one medium is air, at straight boundaries and spherical lenses
• total internal reflection
• critical angle (qualitative)
• visible spectrum as part of electromagnetic radiation, v=fl
• refraction of light through a prism to form a spectrum
• absorption, reflection, and transmission of colour
• primary colours andcolour mixing.

2 Contexts could include mirrors, cameras, microscopes, optical glasses, binoculars, telescopes, and the eye.
3 An ability to use ray diagrams to determine the nature, position, and size of images is expected.
4 Terms:
• Describe requires the student to draw and label diagrams or give characteristics of or an account of.
• Explain requires the student to use diagrams or provide reasons for how or why.
• Discuss requires the student to link scientific ideas to justify, relate, evaluate, compare and contrast, or analyse

Links to past papers
2008: Exam paper marking schedule
2007: Exam paper marking schedule
2006: Exam paper marking schedule
2005: Exam paper marking schedule